Enhancing Performance of VoIP over HSDPA

Author

Lundén, Petteri ; Kuusela, Markku

Author_Institution

Nokia Res. Center

fYear

2007

fDate

22-25 April 2007

Firstpage

825

Lastpage

829

Abstract

This paper presents a study of packet scheduling enhancements for VoIP service over high-speed downlink packet access (HSDPA) in WCDMA. Taking VoIP traffic characteristics into account in Node B packet scheduling algorithm is a key element in achieving good performance and high VoIP capacity. The novelty of this study consists of dynamic transmission resource allocation method for VoIP service. Dynamic resource allocation takes the estimated channel conditions and the transmission requirements of a user into account to increase the efficiency of resource utilization. Simulation results produced with a dynamic system simulator indicate 20 % VoIP capacity gain achieved with the proposed enhancement when compared to the conventional even share resource allocation.

Keywords

3G mobile communication; Internet telephony; channel estimation; code division multiple access; resource allocation; scheduling; HSDPA; VoIP traffic; WCDMA; channel estimation; dynamic transmission resource allocation method; high-speed downlink packet access; packet scheduling enhancements; Computer buffers; Costs; Delay; Downlink; Dynamic scheduling; Multiaccess communication; Optimization methods; Resource management; Scheduling algorithm; Switching circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th

Conference_Location

Dublin

ISSN

1550-2252

Print_ISBN

1-4244-0266-2

Type

conf

DOI

10.1109/VETECS.2007.179

Filename

4212607